1 JUNE 200631-1 OHIO BRASS AIKEN, SC POWER SYSTEMS, in USAS ection31 IEEE TESTEDDynaVar Distribution Class (PDV) andRiser Pole (PVR) Surge ArrestersIntroducing the NEW PDV-100 Patent Numbers: 6,828,895& 6,956,458 JUNE 2006 OHIO BRASS AIKEN, SC31- POWER SYSTEMS, INC. Copyright 2006 Hubbell/Ohio Brass 1850 Richland Avenue East Aiken, SC 29801 NOTE: Because Hubbell has a policy of continuous product improvement, we reserve the right to change design and specifications without - MaterialHubbell POWER Systems, Inc. warrants all products sold by it to be merchantable (as such term is defined in the Uniform Commercial Code) and to be free from defects in material and workmanship. Buyer must notify the Company promptly of any claim under this warranty. The Buyer s exclusive remedy for breach of this warranty shall be the repair or replacement, factory, at the Company s option, of any product defective under the warranty which is returned to the Company within one year from the date of shipment.
2 NO OTHER WARRANTY, WHETHER EXPRESS OR ARISING BY OPERATION OF LAW, COURSE OF DEALING, USAGE OF TRADE OR OTHERWISE IMPLIED, SHALL EXIST IN CONNECTION WITH THE COMPANY S PRODUCTS OR ANY SALE OR USE THEREOF. The Company shall in no event be liable for any loss of profits or any consequential or special damages incurred by Buyer. The Company s warranty shall run only to the first Buyer of a product from the Company, from the Company s distributor, or from an original equipment manufacturer reselling the Company s product, and is non-assignable and non-transferable and shall be of no force and effect if asserted by any per-son other than such first Buyer. This warranty applies only to the use of the product as intended by Seller and does not cover any misapplication or misuse of said - ApplicationHubbell POWER Systems, Inc. does not warrant the accuracy of and results from product or system performance recommendations resulting from any engineering analysis or study.
3 This applies regardless of whether a charge is made for the recommendation, or if it is provided free of for selection of the proper product or application rests solely with the purchaser. In the event of errors or inaccuracies determined to be caused by Hubbell POWER Systems, Inc. , its liability will be limited to the re-performance of any such analysis or study. Table of ContentsPageWarranty ..31-2 Introduction ..31-3 PDV/PVR Distribution Surge Arresters ..31-3 Alloy ESP Housing ..31-3 Basic Construction ..31-3 Benefits ..31-3 Tests Verify PDV/PVR Arrester Full Scale Fault Current Tests ..31-4 Design Test Report Summary ..31-4 Optima Design Improvements ..31-4 DynaVar PDV/PVR Selection Considerations ..31-5 Temporary Overvoltage ..31-5, 31-6 Mounting Hardware Optional Attachments ..31-7 How to Specify a 7000 Code Suffix.
4 31-7 Tightening Torques for PDV/PVR Arrester Fasteners ..31-7 Options Table ..31-7 PDV/PVR Electrical Characteristics ..31-8 Insulation Coordination ..31-9 PDV/PVR Dimensions ..31-10 Leakage Distances ..31-10 Dimension Mounting Configurations and Hardware ..31-11 PDV Optima Testaments ..31-12 JUNE 200631-3 OHIO BRASS AIKEN, SC POWER SYSTEMS, ConstructionIn the PDV/PVR arresters, the Varistors are locked in place with tightly wound layers of fiberglass filament impregnated with epoxy resin. The arrester housing is made from our proprietary blend of ESP silicone alloy. In addition to ESP s exceptional performance as an insulator material, ESP s properties have been confirmed in a series of performance tests which include tracking resistance, contamination, aging, and seal PDV/PVR arresters can be used with all standard mounting arms and brackets.
5 They come with all the necessary fasteners, isolators, and terminal attachments. A specially designed glass-filled polyester insulating bracket, with integrated disconnector, along with optional mounting brackets such as the cross arm or transformer bracket, enable mounting the arrester in a way which best suits each individual customer. Below is a typical cross section view of one of our distribution type arresters. Cutaway View of Typical PDV/PVR UnitIntroductionThe PDV-100 arrester was introduced in 1986 as the very first non-ceramic arrester for heavy duty applications. Now, 18 years and 15 million arresters later, we are pleased to introduce the newest addition to the Ohio Brass arrester family, the PDV-100 Optima. Ohio Brass offers a full line of polymer arresters for distribution voltages. The newest in the line, the PDV-100 Optima, adds all the benefits of a heavy duty distribution arrester, combined with a new disconnector which improves system reliability and increases TOV capability.
6 The PVR targets cable applications where low discharge voltages promote longer cable life. The PDV-65 is our normal duty arrester offering cost effective PDV-100 Optima joins an impressive list of advances that Ohio Brass has brought to arrester technology since it began making arresters in 1950. Improvements in design, such as the Optima have increased protective margins and durability. More important in terms of dollars and service reliability, Ohio Brass arresters have generated substantial savings for utilities. On the following pages are additional benefits and capabilities of our of the NEW PDV-100 Optima Improved Isolator Reliability Patented Isolator Design Good Down to One Amp Operation Saves Utilities Money and Improves system Reliability New Universal Protective Cap Higher 60 Hz TOV Capability Field Proven Sealing SystemStainless SteelTerminal StudStainless Steel CapEnd Terminal Live Silicone InterfaceAlloy ESP Rubber Housing Metal Oxide Varistor Belleville Washer Epoxy-Fiberglass WrapMetal Oxide Varistor JUNE 2006 OHIO BRASS AIKEN, SC31- POWER SYSTEMS, Verify PDV/PVR Arrester DesignFull Scale Fault Current TestsShort circuit design tests were performed on PDV65, PDV100 Optima, and PVR arresters in accordance with Section of IEEE Standard.
7 Eight arresters of each type were tested. Per the standard, four samples were tested at the claimed high current withstand capability. Two of these samples were assembled with internal fuse wires. The other two were good arresters which were subjected to an overvolt-age condition, which failed the arrester (with a weak source). The arrester was immediately subjected to the claimed high current fault current. Two additional arresters were subjected to fault currents approximately half of the claimed high current value. The fault current duration for all high current tests was 12 cycles. Finally, two arresters were subjected to a nominal 600 amp, 1 second fault current test. All test arresters were 17 kV MCOV, the longest single module configuration used for each arrester type. Tests were performed at full voltage (17 kV rms).Successful performance was demonstrated when the ep-oxy-fiberglass wrapped arrester modules burned through to relieve internal pressures associated with the fault current arcing.
8 In all cases, the arrester remained intact, except at the high current levels which caused polymer housing fragmenta-tion, which is following table summarizes the claimed short circuit capabilities for the TypePDV 65 PDV 65 PDV 65 PDV 100 OptimaPDV 100 OptimaPDV 100 OptimaPVRPVRPVRS hort Circuit Design Test Report SummaryThe PDV-100 Optima and PDV-65 arresters have been tested in accordance with IEEE Standard for metal-ox-ide surge arresters. There is no standard for PVR arresters so they were tested per the heavy duty PDV-100 Optima/PVR meet or exceed all the require-ments for heavy-duty distribution arrester designs. The PDV-65 meets or exceeds all requirements for normal duty surge table below summarizes the capabilities of these DutyPDV-100 Optima+Riser Pole PVR2 - 100 kADischarges20 - 250A x 2000 sec Discharges20 - 10 kAplus 2 - 40 kADischargesTestHigh Current-Short DurationLow CurrentLong DurationDuty CycleNormal DutyPDV-652 - 65 kADischarges20 - 75A x 2000 sec Discharges22 - 5 kADischargesShort Circuit Test Current Arms15,000 7,500 50020,00010,000 50020,00010,000 500 The above is merely a summary of a portion of the design tests performed on PDV/PVR arresters.
9 Contact your Ohio Brass sales representative for complete test reports on these two Optima Design ImprovementsThe new Ohio Brass PDV-100 Optima incorporates a redesigned disconnector and a new line end protective cap. Both of these are aimed at improving the overall system Disconnector ReliabilityHistorically distribution class surge arresters were installed with a ground lead disconnecting device. The purpose of this component is to allow a failed (shorted) arrester to automatically disconnect from the line. This allowed the line to quickly be returned to service and also provided a visual indication to crews as to which arrester had failed and needed to be under conditions that allowed a low fault current to flow through the arrester - damage will occur to the disconnector s internal grading resistor. When this condition occurs the disconnector will not operate.
10 With the introduction of polymer arrester designs this situation was aggravated since it was nearly impossible to identify a failed arrester from the ground and the circuit would be locked PDV-100 Optima design incorporates a patented capacitor-graded Optima disconnector into the insulated bracket attached to the base end of the following curve shows that the low current end of the detonation range for the capacitor-graded Optima disconnector has been extended from 20 amps down to 1 amp. This assures proper disconnector operation even at very low fault current testing has confirmed that the electrical integrity of the capacitor-graded Optima disconnector is not affected by exposure to prolonged TOV conditions or 100 kA lightning duty. In the unlikely event of arrester failure, it does ensure proper detonation of the disconnector, separating the arrester ground lead and preventing lockout from Universal PDV 100 Optima Protective CapThe new Optima line end protective cap is designed for single or thru connection lead wires.